Bought an old Car Seat and weldid it on to the remnants of my old office chair. With a bit of steal tube in the midel, since the hidrolic hight ajustment was to long.
That sounds lovely, but the one I found is actually just what I need, and it was a real bargain. It didn’t need to be particularly fancy, just comfortable and heating would have been overkill for me. So now I’ve got a chair that’ll probably last me at least 20 years.